All those lights are on the same circuit. Like AAGE suggests check the fuse panel for blown fuses. The glass type fuse holders can get loose as well or the fuse itself can be damaged and look fine. Use a multimeter to make sure you have power on both sides of the fuse. If you have power there and still no lights then you have a break in the wire somewhere between the panel and the first light on the circuit which will be the overhead light in the kitchen. Check for power at every light in the circuit until you find where the break is. If you replace the fuse and it immediately blows again you have a dead short somewhere in the circuit. Again start at the beginning of the circuit and check for contiuity to ground until you find the short.